The main "currency" carried when camping, hunting, or traveling to any remote location. Commonly mis-pronounced as 'toilet paper', mountain money is a vital part of any enjoyable outdoor vacation. (unless of course you enjoy fecal matter dripping out of your pants, and stinking like a turd)

Measured in rolls, one should always take at least two when going on any expedition.

Note: Paper towels are a poor and unexcuseable substitute for mountain money.

Camping Scenario 1:

Jim: "Hey, you bring any toilet paper?"
Bob: "You mean mountain money?"
Jim: "Yeah, whatever, do you have any?"
Bob: "Sure, there is some in the back of the truck...don't forget the shovel."